[paymentrequest] At the time complete() is called, your ability to say success (true) or failure (false) may depend on the payment method (#67)

I propose that we change the signature of complete() to take a string instead. This also reads on #54. The string would be payment method specific and could be "true", "false", or "unknown", for example.

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Reply to this email directly or view it on GitHub:
https://github.com/WICG/paymentrequest/issues/67